答:\usepackage{cite} [10],[11],[12] → [10]-[12]
\usepackage[numbers,sort]{natbib} [10],[11],[12] → [10,11,12]
\usepackage[numbers,sort&compress]{natbib} [10],[11],[12] → [10-12]
答:$ \chi_2(t) = \left[
\begin{array}{cccc}
x^T(t) & x^T(t-d(t)) & x^T(t-h_2) & \frac{1}{d(t)}\int_{t-d(t)}^{t}x^T(s) ds
\end{array}
\right. \\
\left.\begin{array}{cc}
\frac{1}{h_2-d(t)}\int^{t-d(t)}_{t-h_2}x^T(s) ds & \dot{x}^T(t)
\end{array}
\right]^T$
答:\lim\limits_{}
答:\begin{align}
\renewcommand\arraystretch{1.3}
\end{align}
答:\usepackage{color}
{\color{red/blue/green/black/white/cyan/magenta/yellow}text}
答:参见 https://zh.wikipedia.org/wiki/Help:%E6%95%B0%E5%AD%A6%E5%85%AC%E5%BC%8F
https://blog.csdn.net/anxiaoxi45/article/details/39449445
原文:https://www.cnblogs.com/wan2-0/p/14607278.html